Paper-guide for type-writers



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PAPER GUIDE EUR TYPE WRITERS;

APPLICATION FILED JAN. 31, 1902.

.No MODEL.

,mln i ATTORNEYS UNITED STATES Patented February 16, 1904'.

vPATENT OFFICE.

OSCAR CARL KAVLE, OF HARTFORD, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNDERVVOOD TYPEVVRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF JERSEY.

PAPER-GUIDE FOR TYPE-WRITERS.

SPECIFICATION forming part of Letters Patent No. 752,076, dated February 16, 1904. A

Application iiled January 31, 1902. Serial No. 91,992, (N I nOdel-l To all whom. it may concern:

Be it known that I, OSCAR CARL KAvLE, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Paper-Guides for Type-Writers,of which the following is a full, clear, and exact description.

-lVly invention relates to type-writing machines, and has particular reference to paperguides, such as are used in connection with the platen to hold the paper Jrirmly against the platen.

The object of the invention is to provide a simple mechanism of the above-indicated class in which a single operating element or shaft is employed for governing the action of two sets of pressure-rollers and in which provision is made for a ready adjustment of the pressure with which said rollers bear against the platen and for a quick and positive release of the paper from said rollers when desired.

My invention consists of the novel construction and arrangement of parts, which will be specifically pointed out in the appended claims.

An example showing how my invention' may be carried out in practice is illustrated by the accompanying drawings, in Which- Figure l is a bottom plan view of a typewriter platen and the adjacent parts, together with the pressure-rollers and the mechanism connected therewith. Fig. 2 is a sectional elevation on line 2 2 yof Fig. 1, and Figs. 3 and 4 are detail views drawn .upon an enlarged scale and showing thepressurerrollers in two differentpositions.

A designates the type-writer platen journaled ina frame, parts of which are indicated by the letter B. In this frame is supported a rod C, extending parallel with the platen, and upon this rod are pivotally carried arms D, the inner ends of which are provided with hubs D', mounted on the said rod C. The outer ends of the arms D are recessed or socketed to receive rods E, upon which are mounted the pressure-rollers F, each of these rollers being preferably independent of the others so far as rotary motion is concerned. The hubs D are provided with arms or tappets D2, and, as shown in the drawings, there are provided two sets of arms D, the ,tappets D2 of which are arranged out of line transversely. On the rod C are further supported bearings G, held in place by screws G', and in which is journaled a rod or shaft H., This shaft is provided with a milled head H and is held against longitudinal movement by means of a pin or screw H2, engaging a slot in one of the bearings G. The rod or shaft H is provided adjacent to the tappets D2 with operating portions H3, which, as shown, are formed by fiattening` or recessing the shaft at those points.

Adjacent to the hubs D', I secure upon the rod C .two supporting-collars I, held in place by means of set-screws I and formed with an eccentric surface relatively tothe rod C. as shown in Fig. 4. Upon this eccentric surface is secured a springJ, the free end of which engages one of the arms D, so as to constantly press the same toward the platen and so as to also press the adjacent tappets D2 toward each other and into rm engagement with the shaft H. It will be understood that when this shaft is in such a position as to allow the tappets D2 to enter the recesses H3 the pressure-rollers F will be in contactzwith-v the platen A or with the paper thereonx When, however, the shaft is turned into the position shown in Fig. 3, so that the full thickness or diameter of the shaft will be between the two tappets D2, the

`rollers F will be raised oli the platen, and it will then be easy to insert several sheets of paper.

The hubs or collars I perform three functions: A f

Eirst. They serve as supports for the springs J.

Second. They serve as means for adjusting the force with which the springs bear on the arms D. It will be understood that by turning the hubs I on the shaft the action of the spring may be varied, particularly owing to the eccentric formation of the surface to which the spring is attached; but it will be understood that even without this formation a turning of the hub I would vary the tension of the spring.

Third. The two hubs I at the same portion of the shaft H serve as a means of confining the adjacent collars D and for preventing their longitudinal movement. These collars overlap slightly and form shoulders which abut against each other in case one of the rods carrying the pressure-rollers should accidentally, as by a blow, be forced outward beyond the point to which it is brought by the action of the shaft H. By this construction any excessive outward movement of the pressurerollers is prevented.

The two sets of rollers may be of different diameter, if desired, the smaller ones being located near the discharge-point ofthe platen adjacent to the customarily-fixed guide K, which may be supported by spring-brackets K', secured to the rod C. The shaft H is also journaled in the central bracket L, which is secured to the rod C and carries a roller M, adapted to travel on the carriage-track according to a well-known construction of typewriters.

While I have shown and described the details ofa specific embodiment of my invention, I desire it to be clearly understood that this is to be taken only as an example of the many forms in which my invention may be carried out.

Now what I claim for my invention, and desire to secure by Letters Patent, is-

l. rIhe combination with the platen, of .a stationary rod located adjacent thereto, arms pivoted on said rod and extending in opposite directions, collars secured adjustably to said rod at each side of the arms, springs extending from `the collars and engaging the arms and an 'operating-shaft arranged adjacent to thel arms, the said shaft having irregular portions engaging members projected from the arms to govern the position thereof.

2. ,The combination with the platen, of a rod secured adjacent thereto, pivoted arms extending in opposite directions from said rod, collars adjustably secured to the rod on each side of the said arms and provided with eccentric surfaces, springs secured tothe said eccentric surfaces of the collars and engaging the arms, and pressure-exerting devices carried by the arms.

3. The combination with the platen, of a support adjacent thereto, an arm pivoted upon said support, a pressure-exerting device carried by said arm, and a normally stationary spring having a vsliding engagementwith said arm and secured to said support adjustably so that it may be turned on said support.

L lThe combination with the platen, of a support adjacent thereto, an arm pivoted on said support, a pressure-exerting device car'- ried by said arm, a collar normally stationary relatively to the support, but capable of being turned thereon for adjustment, said collar being provided with a surface eccentric to the support, and a spring secured to the collar and engaging the arm andthe eccentric surface of the collar.

5. The combination with the platen, of a support adjacent thereto, an arm /pivoted on said support, a pressure-exerting device carried by said arm, a collar eccentrically mounted to turn on the support for adjustment, means for locking the collar to the support and a spring secured to the adjustable collar andv engaging the arm.

6. rIhe combination with the platen, of pressure-exerting devices, tension devices for pressing said pressure-exerting devices toward the platen and independent eccentricallymounted collars for adjustingA the tension devices belonging to different pressure-exerting devices.

In testimony whereof I have signed my name to this specification-in the presence of two subscribing witnesses.

OSCAR CARL KAVLE.

Witnesses:

EDWARDuJ. MANNING, J EREMIAH J. MURPHY. 

